Call Center:

 

Repair Center:

 

Repair Center:

 

Symptom

 

Suggestions

 

Likely Causes

 

Comments

 

Display

 

 

 

 

 

 

 

Dark display, no

 

Make sure notebook is turned

 

Display cable

 

Check cable connections.

 

light.

 

on and warmed up.

 

connection.

 

Replace SDRAM modules.

 

 

 

Check power supply.

 

SDRAM modules.

 

Make sure CPU module is

 

 

 

Make sure SDRAM modules

 

CPU module.

 

installed properly, replace

 

 

 

are installed properly.

 

Display assembly.

 

CPU module.

 

 

 

Adjust display brightness.

 

Motherboard.

 

Check display cable

 

 

 

Press Fn+F5 several times.

 

 

 

connections, replace display

 

 

 

Try external monitor.

 

 

 

assembly.

 

 

 

 

 

 

If external monitor displays

 

 

 

 

 

 

 

 

 

 

 

 

 

 

no image, replace

 

 

 

 

 

 

 

motherboard.

 

White display.

 

Adjust display brightness.

 

Display assembly.

 

 

 

 

 

 

 

Switchboard PCA.

 

 

 

Erratic display.

 

 

 

Display cable

 

Check display cable

 

 

 

 

 

connection.

 

connection.

 

 

 

 

 

Switchboard PCA.

 

 

 

 

 

 

 

Display assembly.

 

 

 

 

 

 

 

Motherboard.

 

 

 

Bright or missing

 

See quality statement on

 

Display cable

 

Check display cable

 

pixels or lines.

 

page 5-2.

 

connection.

 

connection.

 

 

 

 

 

Display assembly.

 

See quality statement on

 

 

 

 

 

 

 

page 5-2.

 

Punctured display.

 

 

 

 

Declared to be caused by

 

 

 

 

 

 

 

customer abuse.

 

Vertical crack near

 

 

 

Usually caused by

 

Declared to be caused by

 

center of display.

 

 

 

closing display with

 

customer abuse.

 

 

 

 

 

pencil-sized object on

 

 

 

 

 

 

 

keyboard.

 

 

 

Scratched display

 

 

 

 

 

Declared to be caused by

 

glass.

 

 

 

 

 

customer abuse.

 

Local area of dark

 

 

 

Caused by excessive

 

Declared to be caused by

 

or light discoloration

 

 

 

pressure applied to

 

customer abuse.

 

visible when display

 

 

 

area on screen.

 

 

 

is on.

 

 

 

 

 

 

 

External display

 

Check connections.

 

External display.

 

 

 

does not work.

 

Press Fn+F5 several times.

 

Motherboard.

 

 

 

 

 

Try display on another

 

 

 

 

 

 

 

computer.

 

 

 

 

 

Hard disk

 

 

 

 

 

 

 

Hard disk never

 

Check power source.

 

Hard drive or

 

If drive case is damaged,

 

spins.

 

Remove and reinstall hard

 

connector.

 

drive may not operate

 

 

 

drive. Check connector.

 

Motherboard.

 

properly.

 

Hard disk makes

 

Back up disk immediately.

 

Hard drive.

Check notebook and drive for

 

clunking or

 

Was notebook or drive

 

 

 

evidence of customer abuse.

 

scratching noise.

 

dropped?

 

 

 

 

 

Hard disk makes

 

Back up disk immediately.

 

Depends on noise

 

 

 

buzzing or whining

 

Check hard disk installation.

 

source.

 

 

 

noise.

 

Check for alternate noise

 

 

 

 

 

 

 

sources, such as PCMCIA

 

 

 

 

 

 

 

drive or fan.

 

 

 

 

 

3-10 Troubleshooting and Diagnostics

Service Manual